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Design Example: Capacitance Multiplier Circuit

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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

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Scheme for realizing a photon number amplifier.

S T Ho, H P Yuen

|October 16, 2009

Summary

This summary is machine-generated.

A novel photon number amplifier scheme using a high-efficiency photodetector and number-state laser shows minimal noise limitations. This design is effective for nearly classical input states, enhancing quantum optical measurements.

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Area of Science:

Quantum Optics
Semiconductor Lasers
Photodetection

Background:

Photon number amplification is crucial for sensitive quantum measurements.
Existing amplification schemes face limitations from electronic noise and laser quantum efficiency.

Purpose of the Study:

To analyze a new scheme for a photon number amplifier.
To evaluate the performance limitations of this amplifier, particularly concerning noise and efficiency.

Main Methods:

Theoretical analysis of a photon number amplifier.
Utilizing a high-quantum-efficiency photodetector and a number-state semiconductor laser.
Investigating performance for nearly classical input states.

Main Results:

The proposed photon number amplifier is not significantly limited by electronic amplifier noise.
Laser quantum efficiency has a limited impact on performance for specific input states.
The scheme demonstrates robustness for nearly classical light.

Conclusions:

The analyzed scheme offers a promising approach for photon number amplification.
The amplifier is particularly effective under conditions of nearly classical input.
This advancement could improve the precision of quantum optical experiments.